In the lifespan of a wind turbine, the gearbox is replaced on average four times due to wear and tear. All together this is almost the cost of a new turbine.
In June 2011, a hitherto unparalleled demonstra- tion of wind lidar performance was obtained in the calibrated wind tunnel belonging to LM Wind Power, Kolding Denmark:
There is an increasing demand for insulation, in- cluding energy saving windows. The project aims to develop a new generation of high-insulating window frames from composite material.